The results of the studies by G. J. Schmidt & E. E. Schilling (Amer. J. Bot. 87: 716-726. 2000) and those of M. Ito et al. (J. Plant Res. 113: 79-89. 2000) are in conflict as to the re-recognition of Eupatoriadelphus. Schmidt and Schilling favor a distinct Eupatoriadelphus (= the "Eutrochium group") whereas Ito et al. imply that Eupatorium s.s. can be divided into three "morphological species groups," one of which is the "Eutrochium group." As there is still much confusion among the Chinese species of Eupatorium with both sexual and agamospermous species, the species here are simply arranged alphabetically. The presence of the hybrid E. ×tripartitum (Makino) Murata & H. Koyama (E. chinense × E. lindleyanum), a plant with tripartite leaves, has been recorded.